i had a similar prob with mine i tore it all apart got the new blower,went to put it in and found that the plug on the bottom of the unit ,i think its a 3 prong plug, but anyway the one wire was burnt and not making a good connection so after all that i put a new piece of wire in and it was fine. i would say if the fuse is ok and u cant see any broken wires unplug the motor get a wire light tester and tturn the switch on and test for power,if u have power then go buy a blower motor (u can always take it back if thats not the problem),just pull ur old one out (watch cuz some parts are gonna fall out,gasket,etc,) unplug it ,plug in the new one and see if it works before u install it completly.